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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '16') AND (category.subclass = '18CG') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '16'; Subclass is '18CG';

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T / S Patent Date Description Patentee Category Assigned To
 1859
U 24,294 June 7, 1859 Leg for Pianos
Glass insert in a piano leg with hole for mounting a caster wheel		 GELIN, Felix
GELIN, Charles
 Piano  

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